DIFFERENCE BETWEEN CORE I3, CORE I5, CORE I7.. ► Core i3: * Entry level processor. * 2-4 Cores * 4 Threads * Hyper-Threading(efficient use of processor resources) * 3-4 MB Cache * 32 nm Silicon (less heat and energy) ► Core i5: * Mid range processor. * 2-4 Cores * 4 Threads * Turbo Mode (turn off core if not used) * Hyper-Threading(efficient use of processor resources) * 3-8 MB Cache * 32-45 nm Silicon (less heat and energy) ► Core i7: * High end processor. * 4 Cores * 8 Threads * Turbo Mode (turn off core if not used) * Hyper-Threading(efficient use of processor resources) * 4-8 MB Cache * 32-45 nm Silicon (less heat and energy)